Advertisements
Advertisements
Question
What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
Advertisements
Solution
A switch is an electric device that is used to complete or break an electric circuit. If the switch is ‘ON’, then a current can flow through the circuit. However, if the switch is ‘OFF’, then the current cannot flow through the circuit.
Electrical appliances such as table fans, electric lamps, washing machines, juicers and mixers, TV, radio, etc. have switches built into them.
RELATED QUESTIONS
Name the wire in a household electrical circuit to which the switch is connected.
What is the purpose of a switch in a circuit?
A switch is not touched with wet hands while putting it on or off. Give a reason for your answer.
The diagram below shows a dual control switch circuit connected to a bulb.

(i) Copy the diagram and complete it so that the bulb is switched ON.
(ii) Out of A and B which one is the live wire and which one is the neutral wire ?
What are ‘dual switches’? Mention their one main use.
Why should switches always be connected to the live wire? Give one precaution that should be taken while handling switches.
Would the bulb glow in the circuit shown in Figure?

In which position is the key placed in a circuit?
Name the component of a circuit which help us to start or stop the appliances & safely and easily.
Name the wire to which a switch is connected.
